Fluid Mechanics Flashcards

1
Q

Define air resistance

A

The force that opposes the direction of motion of a body through the air

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2
Q

Define drag

A

The force that opposes the direction of motion of a body through the water

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3
Q

What factors affect the magnitude of air resistance and drag on a body

A

• velocity
• frontal cross sectional area
• streamlining, aerofoil shape
• surface characteristics (smoothness)

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4
Q

Define streamlining

A

The creation of smooth air flow around an aerodynamic shape

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5
Q

Define aerofoil

A

A streamlined shape with a curved upper surface and flat lower surface designed to give an additional lift force to a body

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